Hi, My problem: all windows/dialogboxes have the same size (width: 300 height: 300) and opens at the same place on the desktop. my $Window = new Win32::GUI::DialogBox( -left => 100, -top => 100, -height => 250, -width => 500, -title => "$Title $Version", -name => "MyWindow", -style => WS_MINIMIZEBOX | WS_CAPTION | WS_SYSMENU, -menu => $Menu, ); But this is only on my PC - if i distribute my programs, they have the "real" size and position. I already reinstalled Win32-GUI, but still the same. Thanks, Urs